<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>测试git</title>
</head>
<body>
    <div>测试</div>
    <h1 class="title">测试</h1>
    <script>
        function test(a,b){
            return a+b
        }
        const res = test(1,2)
        console.log("测试666", res);
        console.log("测试777", res);
        document.write("加法运算", res);
        console.log("测试888", res);
        document.write("继续加法运算");
        
        let title = document.querySelector(".title")
        title.innerHTML = "测试git"
    </script>
</body>
</html>